In this post i come to propose a improve to actual artisan UI, taking all materials with this system (stackable items). The system would introduce:

- Gems (Images in Spanish, sorry for that, i will explain in text)

First way: Every gem has her own button, and when you click it, will open the UI of right side, type the amount that you want, click accept and will send gems to inventory. This way is the first that i thought, but i think the second one is better, go to look it.

Second Way: Would add only one button, when you click on it, will open UI of right side that have a ListBox and Textbox. In the listBox you choose type of gem do you want and in the textbutton you can write the amount of gem's type that you want to extract to the inventory, more simpler than the first way.

- Infernal Machines

It would introduce like the gems system for their extraction. They would introduce in the Infernal Fire tab.

- Greater rift keystones

It wouldn't need anything, because is more simple. When you get a key, add (+1) in her UI value, and when you use one for do a GR, subtraction (-1) in her UI value and you can GR keys to artisan UI.

- Ramaladni's Gift

The same that gem system for him extraction

With this, only legendary gems can't enter in the UI, because they aren't a stackable items.

I think if they were able to balance the skills/damage/items/etc. for ONLY the arena option, and the campaign/adventure mode kept the same values, then I feel that it would work. I'm just not sure if that would be easy to do programming-wise or not?

Yeah, but basically it's a game inside another game, and Blizzard now don't want spend a lot of money on Diablo. PvP in campaign/adventure mode is impossible, because in the next patch we will have more damage again thanks to primal items and more Paragon.
I would thinking in another game, like Lost Ark, Lineage Eternal or MU Legend if you want do PvP, Diablo doesn't seem that will have PvP in a future.

- Players only play no season, if the patch has content and he/she is interested on it, try to get it, and after this, follow play no season pushing leaderboards every era.
- Players only play season for get season journey rewards, get the new content if has, and after this, leave the game.
- Players play season for get season journey rewards, get the new content, and push in leaderboards.

I personally, i'm the player type 2, i don't interested on pushing grifts, i like get new content and complete season journey every season.

Thanks for the videos, i think the items are bugged in live version or has very low chance for spawn and in PTR Blizzard increased the droprate or spawnrate, because a lot of people looked for it, knowing places, and never encountered them.

Nevalistis said they go to increase spawn rate for get Khazra Pennant. Good luck to PTR players are looking for it

I'm doing rainbow goblin farm and i searching some about Graw. The hexadecimal file says that he spawns on Act 2, but we don't know where is. The unique enemies spawns in zone where you can find more of the same type, but i encounter some uniques out of normal enemies spawns.

The house on right in the Black cannyon maybe has something:

In Act I, Fields of Misery exists one house instance, maybe this one has a instance.